This afternoon's sailing to Liverpool is now delayed by three hours as engineers are still working on the Manannan's faulty generator.
The Steam Packet says the 3pm crossing is now expected to depart at 6.15pm, Thursday, August 7.
This will also impact the return sailing, which is now due to leave Liverpool at 10:15pm.
It comes after the vessel had to return to Douglas midway into its journey to Liverpool this morning.
Tyson Fury's boxing glove sold for £7k in charity auction
Parcels may be hit by customs charges under EU rules
Number of police searches rises by nearly 37 percent
Broad to stand for Ayre and Michael
Road to beauty spot temporarily closed from today
Politician to query government income from medical cannabis
Police appeal over prom incident
Christian to defend seat